CNG and LPG Vehicle Market Size, Share, Demand Report By Fuel Type (CNG Vehicles, LPG Vehicles, Bi-Fuel Vehicles, Dual-Fuel Conversion Systems), By Vehicle Type (Passenger Cars, Light Commercial Vehicles, Heavy Commercial Vehicles, Fleet Vehicles), By Distribution Channel Type (OEM-Fitted Vehicles, Aftermarket Conversion Kits, Authorized Service Centers, Online Automotive Retail Platforms) By Region & Segment Forecasts, 2025–2034